<!DOCTYPE html>
<script src='../resources/testharness.js'></script>
<script src='../resources/testharnessreport.js'></script>
<script src='resources/shadow-dom.js'></script>
<script src='resources/focus-utils.js'></script>
<div id='log'></div>
<p>
  document tree: [i0 -> [x-foo]]<br>
  x-foo's shadow tree: [j5 -> [x-bar] -> j6]<br>
  x-bar's shadow tree: [k1 -> k0 -> [s2]]<br>
  slot #s2: [j1 -> j2 -> j3 -> j4 -> [s1] -> j0]<br><br>
  slot #s1: [i1 -> i2]<br>
  <b>v1 ideal nav forward:  [i0 -> j5 -> xbar -> k1 -> k0 -> j6]</b><br>
</p>

  <input id='i0' tabindex=0 value='i0'>
  <div id='x-foo'>
    <input id='i2' slot='s1' tabindex=2 value='i2'>
    <input id='i1' slot='s1' tabindex=1 value='i1'>
    <template data-mode='open'>
      <div id='x-bar' tabindex=4>
        <input id='j1' slot='s2' tabindex=1 value='j1'>
        <slot id='s1' name='s1' slot='s2'></slot>
        <input id='j0' slot='s2' tabindex=0 value='j0'>
        <input id='j3' slot='s2' tabindex=2 value='j3'>
        <div id='j4' slot='s2' tabindex=3>
          <input id='j2' tabindex=1 value='j2'>
        </div>
        <template data-mode='open'>
          <input id='k0' tabindex=0 value='k0'>
          <slot id='s2' name='s2' tabindex=-1></slot>
          <input id='k1' tabindex=1 value='k1'>
        </template>
      </div>
      <div id='to-be-ignored-host' tabindex=-1>
        <template data-mode='open'>
          <input id='ignored-input-in-shadow-host1' tabindex=1 value='ignored'>
          <input id='ignored-input-in-shadow-host2' tabindex=2 value='ignored'>
        </template>
      </div>
      <input id='j6' tabindex=4 value='j6'>
      <input id='j5' tabindex=3 value='j5'>
    </template>
  </div>
</div>

<script>
'use strict';

let xfoo = document.getElementById('x-foo');
convertTemplatesToShadowRootsWithin(xfoo);
let sr = xfoo.shadowRoot;

test(() => {
    let elements = [
        'i0',
        'x-foo/j5',
        'x-foo/x-bar',
        'x-foo/x-bar/k1',
        'x-foo/x-bar/k0',
        'x-foo/j6'
    ];

    assert_focus_navigation_forward(elements);
    elements.reverse();
    assert_focus_navigation_backward(elements);
}, 'Focus controller should treat slots as a focus scope.');

test(function() {
    let ignoredHost = sr.getElementById('to-be-ignored-host');
    let ignoredInput1 = ignoredHost.shadowRoot.querySelector('input');
    let ignoredInput2 = ignoredInput1.nextElementSibling;

    let elements = [
        'x-foo/to-be-ignored-host/ignored-input-in-shadow-host1',
        'x-foo/to-be-ignored-host/ignored-input-in-shadow-host2',
        'x-foo/j6'
    ];

    assert_focus_navigation_forward(elements);

    let elementsBackward = [
        'x-foo/to-be-ignored-host/ignored-input-in-shadow-host2',
        'x-foo/to-be-ignored-host/ignored-input-in-shadow-host1',
        'x-foo/x-bar/k0'
    ];
    assert_focus_navigation_backward(elementsBackward);
}, 'This is a regression test: After focusing negative tabindex-ed elements, focus moves in tree order.');
</script>
